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Flowmaster 1999-2004 Ford Mustang American Thunder Cat-Back Exhaust System 17248

Flowmaster 1999-2004 Ford Mustang American Thunder Cat-Back Exhaust System 17248
Flowmaster 1999-2004 Ford Mustang American Thunder Cat-Back Exhaust System 17248Flowmaster 1999-2004 Ford Mustang American Thunder Cat-Back Exhaust System 17248Flowmaster 1999-2004 Ford Mustang American Thunder Cat-Back Exhaust System 17248
$1,256.99 ea
NEWARRIVING SOONEstimated Ship Date 05/29/2025 (If Ordered Today)22 Available from HOLLEY PERFORMANCE PRODUCTS as of 05/09/2025
Model: 4004969
Select a Vehicle or refer to the Vehicle Fitment Tab below to verify that this part fits your vehicle.
OVERSIZE 2
STORE PICKUP
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For the person who wants the look of a traditional dual exhaust system with all the benefits that a Flowmaster Cat-back exhaust system provides. This dual out American Thunder cat-back exhaust system is the perfect choice with a 2.50-inch flanged pipe connecting directly to the catalytic converters, the mandrel-bent aluminized steel inlet tubes flow into a large case Super 40 Series performance mufflers for a deep powerful sound. The system uses the factory hanger locations for an easy installation and features dual 2.50-inch mandrel-bent tailpipes exiting out the back and are finished off with dual 3.00-inch polished stainless steel tips for a muscular look and sound. American Thunder systems deliver a moderate to aggressive exterior tone with a mild-moderate interior tone and are best suited for the enthusiast who wants their performance to be heard. Like all Flowmaster systems, the benefits include improved throttle response, power and mileage. Designed for an easy fit, these systems include all necessary parts and hardware for easy installation. Comes with our 3-year Limited Warranty. If you prefer a full stainless steel exhaust system with a Lifetime Limited Warranty, check out system #817248.
Features:
  • Includes Hangers and Hardware for an Easy Installation
  • Mandrel-bent 16-gauge Aluminized Steel Tubing
  • Includes 3.00-inch Polished Stainless Steel Tips
  • Covered by our 3-year Limited Warranty
  • Dyno Tuned for Maximum Performance
  • Super 40 Series Performance Mufflers
  • Over 35+years of Flowmaster Quality
  • Uses the Factory Hanger Locations
  • Moderate Exterior Exhaust Tone
  • Quick and Easy Installation
Fits 1999-2004 Ford Mustang Cobra with 4.6L DOHC engine.
Installation Notes:
Fits 1999-2004 Ford Mustang Cobra with 4.6L DOHC engine.
About Flowmaster

Manufacturer of performance exhaust systems, mufflers, performance air intakes, turbo boost modules, catalytic converters, race mufflers, headers and numerous exhaust accessories for late model cars, trucks, off-road, Jeeps, SUV’s, classic muscle cars, powersports vehicles and more. Flowmaster® gives you lots of exhaust choices with 12 designs of chambered mufflers, 3 styles of our exclusive “laminar-flow” mufflers and a new line of FlowFX “straight-through” performance mufflers, along with 5 sound categories of exhaust systems, giving you the customer, the power to custom tailor the sound of your vehicle whether you prefer mild, moderate or aggressive tones and sound levels. Since 1983, Flowmaster is the company you can trust, and has led the industry in offering only the best products you can buy for your vehicles.

Downloads:

Download Name File Size
fm_warranty_general.pdf88.58KB
17248_instructions.pdf3.25MB

Videos:

Vehicle Fitment:

The Vehicle Fitment Guide is to be used as a general reference. The data has been provided by our suppliers and manufacturers and may contain errors or incorrect data. Always refer to a professional to verify correct fitment for your vehicle.
Make Model Submodel Years Engine
Ford Mustang SVT Cobra 1999 4.6L / 281 / V8
Ford Mustang SVT Cobra 2001 4.6L / 281 / V8
Ford Mustang SVT Cobra 2003 4.6L / 281 / V8
Ford Mustang SVT Cobra 2004 4.6L / 281 / V8

Specifications:

2WD/4WD 2WD
California Proposition 65 Chemical Name Chromium (hexavalent compounds), Nickel (Metallic)
California Proposition 65 Required Yes
Emission Code 5
Exhaust Series American Thunder
Exit Position Dual Out Rear
Heat Shield No
Inlet Diameter (in) 2.5
Material Aluminized Steel
Muffler Part Number Kit Only
Muffler Quantity 2
Muffler Series Super 40 Series
Outlet Diameter (in) 2.5
Part Type Exhaust System Kit
Product Type Exhaust System
Proposition 65 www.P65Warnings.ca.gov
Single Dual Dual
Sound Level Aggressive / Moderate
System Type Cat-back
Tip Diameter (in) 3
Tip Quantity 2
Tubing Diameter (in) 2.5
Warranty Time 36 Months

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